The quick fit bit system is unlike any other bit in stained glass! It is designed to be quick to change without the use of a hex wrench or other tools like conventional grinder bits. With a flip action of the holder's lever, you can change your bit, or the grit of the bit, in seconds! There's no need to find and use keys or locking tools - no grinder freeze-ups! Standard replacement diamond bit sleeve for the Glastar Superstar II Grinder (#5195 ). Also replacement for... more info